1 - Designers who have a broad base of experience in RTC
2 - Simplicity in design
The third thing that really catches my eye, particularly in enterprise-level RTC software, is that it's No Fee or Low Fee - in other words - popular pricing.
Convenos is an excellent example. To help keep their costs down, they use Skype - a free service. They offer a flat monthly subscription - $30. Attendees can share documents, slide shows and media files from their desktop, and participate in the conference via VoIP.
In my opinion, one of the reasons that Microsoft acquired Groove is because the market for a mega-collaboration application like Live Meeting has a limited customer base. Why? Well, expense for one thing. While it's true that companies can save thousands of dollars annually in travel and entertainment expenses for conference attendance, and that might justify the expense of a moderately-priced RTC app like Convenos, it's going to be an increasingly tougher sell for high-priced products like Live Meeting. Competition in this development niche is fierce and getting moreso, particularly when someone can figure out how to do peer to peer video conferencing - maybe that's Milton Chen with his VSEE technology.
